BMW M140i/M240i B58 Throttle Body Spacer Pumaspeed CNC Billet, Dual Meth Ports WMI Water Methanol Adapter, O-Ring & Hardware, Plug-and-Play

BMW M140i and M240i B58 intake throttle adapter plate with twin WMI ports

Unlock reliable water-methanol delivery on your 3.0 turbo B58 without touching the factory pipework. This precision‑machined billet alloy adapter by Pumaspeed installs at the throttle housing and provides two cleanly placed nozzle positions for even spray and excellent atomisation. It is a quick, tidy and robust way to add WMI on M140i and M240i builds while keeping the original charge system in place.

• Billet aluminium construction for strength, heat resistance and long-term durability
• Twin injection provisions positioned right at the throttle for consistent distribution
• Supplied sealing ring for an air‑tight fit to prevent boost leaks
• Extended high‑tensile fixings included for a secure, factory‑style installation
• Direct bolt‑on fitment - no cutting, no drilling, no need to replace the OE pipe

Built for tuned B58 performance

Whether you are running a remap, hybrid turbo or track‑focused setup, placing the water‑meth nozzles at the throttle housing helps achieve a fine mist and stable intake temps under load. We have fitted this plate to our own B58 projects and to many customer M140i and M240i cars. Fitment is spot on, the seal is dependable and feedback has been consistently positive for ease of install and WMI results.

Vehicle compatibility

• BMW M140i - B58 engine
• BMW M240i - B58 engine

What is in the box

• Billet alloy throttle adapter plate with twin WMI ports
• Pre-fitted O‑ring style seal
• Longer mounting bolts and hardware

Why this WMI plate is the smart choice

• Cleaner and faster to install than a full charge pipe change
• Positions nozzles for optimal misting right before the intake butterfly
• Keeps the OE pipe that flows well on the B58 while adding easy WMI access
• Proven on our cars and repeatedly praised by our customers

Installation and support

Professional fitting recommended. MJ Modifications in Warwickshire offer full installation and guidance on B58 water‑meth setups. For a fitting quote email info@mjmodifications.co.uk.

Search terms to help you find this part

M140i meth injection adapter, M240i methanol plate, B58 intake adapter, twin nozzle meth plate, WMI throttle adapter B58, water meth nozzle plate, billet aluminium intake spacer, B58 methanol injection mount, BMW 1 Series F20 F21 WMI plate, BMW 2 Series F22 F23 WMI adapter, bolt on WMI solution B58, throttle housing adapter M140i, meth bungs B58, water meth kit adapter plate, Pumaspeed WMI plate.

Order today for a clean, reliable and high‑quality way to add water‑methanol to your B58 while retaining the dependable factory pipework.